Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Mellum2-12B-A2.5B-Instruct
27
MiniCPM5-1B
34
Verified leaderboard positions: Mellum2-12B-A2.5B-Instruct unranked · MiniCPM5-1B #31
Pick MiniCPM5-1B if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Instruct only becomes the better choice if instruction following is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Knowledge
+1.1 difference
Inst. Following
+7.2 difference
Mellum2-12B-A2.5B-Instruct
MiniCPM5-1B
N/A
N/A
N/A
N/A
N/A
N/A
128K
131K
Pick MiniCPM5-1B if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Instruct only becomes the better choice if instruction following is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
MiniCPM5-1B is clearly ahead on the provisional aggregate, 34 to 27. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiniCPM5-1B is the reasoning model in the pair, while Mellum2-12B-A2.5B-Instruct is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. MiniCPM5-1B gives you the larger context window at 131K, compared with 128K for Mellum2-12B-A2.5B-Instruct.
MiniCPM5-1B is ahead on BenchLM's provisional leaderboard, 34 to 27. The biggest single separator in this matchup is IFEval, where the scores are 75.8% and 80.4%.
Mellum2-12B-A2.5B-Instruct has the edge for knowledge tasks in this comparison, averaging 40.9 versus 39.8. Inside this category, GPQA-D is the benchmark that creates the most daylight between them.
Mellum2-12B-A2.5B-Instruct has the edge for instruction following in this comparison, averaging 75.8 versus 68.6. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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